Time-differential perturbed-angular-correlation studies of the amorphous Cu-Hf alloys prepared by mechanical alloying and melt spinning.

Abstract

Time-differential perturbed-angular-correlation spectra of the amorphous Cu-Hf alloys prepared by mechanical alloying and melt spinning were measured. The short-range structures in mechanically alloyed and melt-spun amorphous Cu-Hf alloys are compared from a microscopic point of view. It is seen that in the melt-spun amorphous alloy, Hf can occupy a disordered-Hf site or a site as in intermetalliclike ${\mathrm{Cu}}_{3}$${\mathrm{Hf}}_{2}$.